19953615

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 37158912

約数和(自身を除く): 17205297

約数列:

[1, 3, 5, 11, 15, 31, 33, 47, 55, 83, 93, 141, 155, 165, 235, 249, 341, 415, 465, 517, 705, 913, 1023, 1245, 1457, 1551, 1705, 2573, 2585, 2739, 3901, 4371, 4565, 5115, 7285, 7719, 7755, 11703, 12865, 13695, 16027, 19505, 21855, 28303, 38595, 42911, 48081, 58515, 80135, 84909, 120931, 128733, 141515, 214555, 240405, 362793, 424545, 604655, 643665, 1330241, 1813965, 3990723, 6651205, 19953615]

約数ペア:

[(1, 19953615), (3, 6651205), (5, 3990723), (11, 1813965), (15, 1330241), (31, 643665), (33, 604655), (47, 424545), (55, 362793), (83, 240405), (93, 214555), (141, 141515), (155, 128733), (165, 120931), (235, 84909), (249, 80135), (341, 58515), (415, 48081), (465, 42911), (517, 38595), (705, 28303), (913, 21855), (1023, 19505), (1245, 16027), (1457, 13695), (1551, 12865), (1705, 11703), (2573, 7755), (2585, 7719), (2739, 7285), (3901, 5115), (4371, 4565)]